JPH0716746Y2 - Anchor head for fixing slope protection structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION This invention relates to an anchor for fixing a structure for preventing the slope from collapsing.
In particular, the present invention relates to an anchor head for fixing a tensile material to a structure.

[0002]

2. Description of the Related Art A construction method has been developed in which a formwork is assembled on a slope and a hardening material such as concrete is cast to construct a structure to prevent the slope from collapsing. The shape of the structure is, for example, a lattice-shaped structure extending vertically and horizontally on the slope. Such a structure is to fix an arbitrary position to an anchor placed in the natural ground so as to oppose a bulge at the time of slope failure.

[0003]

[Problems to be Solved by the Invention] When fixing an anchor to a structure, a tension member of the anchor penetrates the structure, passes through a pressure plate placed on the structure, and is fixed by a nut or a wedge. . When the tension member is fixed to the pressure receiving plate placed on the structure in this manner, the pressure receiving plate and the like project on the structure, resulting in a very poor appearance. Further, when the hardened material is piled up on it, there is a problem that the periphery of the hardened material must be manually shaped.

The present invention was made in order to solve the above problems, and improves the appearance of the entire structure and makes it possible to finish the slope protection structure anchor head for fixing the structure. The purpose is to provide.

[0005]

This invention is implemented in a slope protection structure constructed by installing a formwork on the slope. The structure to be constructed may have various shapes, and may be, for example, a lattice-shaped structure extending vertically and horizontally on the slope. As the structure formwork used here, a reticulated formwork such as an expanded metal or a crimp wire mesh can be considered. A concave formwork is installed at an arbitrary position of this structure, for example, at an intersection of the lattice-shaped structure. The concave mold is made of expanded metal, crimp wire mesh, and synthetic resin mesh material.
Its shape is a vessel. The vessel-like shape has a hollow center and is formed so as to surround it in a rectangular or circular shape. Actually, various shapes such as a box shape and a half-pyramidal pyramid shape are conceivable. An anchor hole is formed at the center of the concave mold. This concave formwork is installed between the tops of the structure formwork. In other words, it is installed on the upper side of the form in the height direction, almost aligned with the top.

The protruding portion of the anchor, which has been previously cast in the ground, from the surface of the earth is projected from the anchor hole of the concave formwork. Various anchors have been adopted as anchors, such as ground anchors that use steel stranded wire as a tensile material and are placed in the free length sheath and anchoring length sheath, and anchor bolts that use a steel rod as the tension material. Type can be adopted. A hardener is placed in the structure form with the end of the anchor protruding above the concave form. Cement-based concrete, mortar, and other resin mortar can be considered as the hardening material. The hardening material reaches the lower surface of the concave mold and does not fill the concave mold. After the hardening material is hardened, a pressure receiving material is installed in the concave mold, and the tension material of the anchor is fixed by a wedge or a nut. After that, a hardening material is filled in the concave mold and the anchor is embedded.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on an embodiment shown in the drawings. In the figure, reference numeral 1 denotes a slope protection structure, and a structure form frame 2 made of a crimp wire mesh is vertically and horizontally extended on the slope and installed so as to form a lattice shape as a whole. The concave mold 3 is installed between the tops of the molds 2 and 2. The concave form frame 3 is formed by a crimp wire net and is formed in a half-pyramidal pyramid shape. An anchor hole 4 is formed at the center of the concave formwork 3, and a protruding portion of the anchor 5 from the ground surface is inserted through the anchor hole 4. In the embodiment, a ground anchor using a plurality of steel strands as the tension member 6 is used as the anchor 5.

Concrete 7 which is a hardening material is poured between the structure formwork 2 to reach the lower surface of the concave formwork 3. After the concrete 7 is hardened, a pressure bearing plate 8 and an anchor head 9 which are pressure receiving members are placed in the concave mold 3, and a wedge 10 is placed on this.
The tension member 6 which is tense with the jack is fixed. After that, the mortar 11 is filled in the concave mold 3 to embed the anchor 5, the bearing plate 8 and the anchor head 9.

As the concave mold 3, various other shapes can be adopted, for example, a box-shaped one as shown in FIG. 3 or a half cone-shaped one as shown in FIG. Can be adopted. In addition, reticulated materials such as expanded metal and synthetic resin nets can be widely adopted as the material.

[0010]

EFFECT OF THE INVENTION The present invention has the structure as described above, and the concave formwork is installed and the pressure receiving member is placed therein, and the anchor is fixed to it. , The overall appearance of the structure will be extremely good. Further, it is only necessary to fill the concave mold with a hardening material, and the finishing work is extremely easy. Since the concave formwork is formed of a mesh material, there is no need to remove the formwork, and construction is easy.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of an anchor head according to the present invention.

2 is a cross-sectional view of the embodiment of FIG.

FIG. 3 is a perspective view of another embodiment of the concave formwork.

FIG. 4 is a perspective view of another embodiment of the concave formwork.

FIG. 5 is an overall view of a slope protection structure. 1 Slope protection structure 2 Structure formwork 3 Concave formwork 4 Anchor hole 5 Anchor 6 Tensile material 7 Concrete 8 Bearing plate 9 Anchor head 10 Wedge 11 Mortar

Claims (3)

[Scope of utility model registration request] 1. A concave formwork, which is formed like a vessel with a net-like material and has an anchor hole at the center, is fixed at an arbitrary position approximately between the top ends of the structure formwork installed on the slope. , Projecting the protruding part of the anchor from the surface of the ground through the anchor hole of the concave formwork, driving the hardening material into the structure formwork to reach the lower surface of the concave formwork, and after the hardening material hardens, the concave mold Anchor head for fixing slope protection structure, in which anchor is fixed in the frame, and the concave mold is filled with hardening material to embed the anchor. 2. The anchor head for fixing a slope protection structure according to claim 1, wherein the concave form is formed in a half-cut pyramid shape. 3. The anchor head for fixing a slope protection structure according to claim 1, wherein the concave form is formed in a box shape.